BIOD 152- MODULE 4 EXAM 2024-2025
WITH VERIFIED QUESTIONS AND
CORRECT ANSWERS GRADED A+
Why is the cardiovascular system a closed circulatory system? - ANS-the fluid contents are pumped from
the heart throughout the body and back to the heart
What are some functions of the cardiovascular system? - ANS--Transportation of gases, nutrients waste
-prevents loss of blood from ruptured vessels
-helps fight off pathogens
What does the study of the cardiovascular system cover? - ANS--muscular heart
-blood vessels
-blood
Where is the heart located? - ANS-Pericardial cavity within anterior portion of the mediastinum
What separates the thoracic cavity into 2 pleural cavities? - ANS-mediastinum
Layers of the heart - ANS--pericardium: double layered, surrounded by fluid
-myocardium: thickest layer
-endocardium: continuous with blood vessels
, What anchors the heart to the diaphragm? - ANS-pericardium
Which layer of the heart wall is the contractile layer - ANS-Myocardium
4 chambers of the heart - ANS--right & left atrium: receiving chamber, smaller
-right & left ventricle: sending chamber, larger
What separates the 4 chambers into a right and left? - ANS-Septum
What part of the heart is only present in fetuses? - ANS-Fossa Ovalis:
-opening btwn atria
-allows blood to move directly btwn atria, bypassing the lungs
What is the purpose of having valves in the heart? - ANS-To regulate the direction of blood flow
Which valve sends blood out of the RV and into the pulmonary trunk? - ANS-Pulmonary valve
Which valve sends blood out of the LV into the aorta? - ANS-Aortic valve
Why does the aortic valve need to be stronger? - ANS-Because blood flow leaving the LV has a stronger
presser
Which valve sends blood out of the RA and into the RV? - ANS-Tricuspid valve
Which valve sends blood from the LA into the LV? - ANS-Mitral valve (bicuspid)
blood pathway through heart valves - ANS--RA through tricuspid valve
-RV through pulmonary valve
-pulmonary trunk to pulmonary arteries to lungs
WITH VERIFIED QUESTIONS AND
CORRECT ANSWERS GRADED A+
Why is the cardiovascular system a closed circulatory system? - ANS-the fluid contents are pumped from
the heart throughout the body and back to the heart
What are some functions of the cardiovascular system? - ANS--Transportation of gases, nutrients waste
-prevents loss of blood from ruptured vessels
-helps fight off pathogens
What does the study of the cardiovascular system cover? - ANS--muscular heart
-blood vessels
-blood
Where is the heart located? - ANS-Pericardial cavity within anterior portion of the mediastinum
What separates the thoracic cavity into 2 pleural cavities? - ANS-mediastinum
Layers of the heart - ANS--pericardium: double layered, surrounded by fluid
-myocardium: thickest layer
-endocardium: continuous with blood vessels
, What anchors the heart to the diaphragm? - ANS-pericardium
Which layer of the heart wall is the contractile layer - ANS-Myocardium
4 chambers of the heart - ANS--right & left atrium: receiving chamber, smaller
-right & left ventricle: sending chamber, larger
What separates the 4 chambers into a right and left? - ANS-Septum
What part of the heart is only present in fetuses? - ANS-Fossa Ovalis:
-opening btwn atria
-allows blood to move directly btwn atria, bypassing the lungs
What is the purpose of having valves in the heart? - ANS-To regulate the direction of blood flow
Which valve sends blood out of the RV and into the pulmonary trunk? - ANS-Pulmonary valve
Which valve sends blood out of the LV into the aorta? - ANS-Aortic valve
Why does the aortic valve need to be stronger? - ANS-Because blood flow leaving the LV has a stronger
presser
Which valve sends blood out of the RA and into the RV? - ANS-Tricuspid valve
Which valve sends blood from the LA into the LV? - ANS-Mitral valve (bicuspid)
blood pathway through heart valves - ANS--RA through tricuspid valve
-RV through pulmonary valve
-pulmonary trunk to pulmonary arteries to lungs
